Mysql2::Error::ConnectionError

dockerにて環境構築を行なっているのですが、

docker-compose exec app rails db:create db:migrate

を実行した際に、

Access denied for user 'root'@'172.31.34.153' (using password: YES)
Couldn't create 'Cafewhere_development' database. Please check your configuration.
rails aborted!
Mysql2::Error::ConnectionError: Access denied for user 'root'@'172.31.34.153' (using password: YES)

とのエラーが発生してしまいます。

「database.yml」「docker-compose」は下記の通りです。
(※データベースはAWSのRDSにて作成したものを使用するので、docker-composeのservice箇所はコメントアウトしています)

databaseyml
1
2default: &default
3  adapter: mysql2
4  encoding: utf8
5  pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
6  username: <%= ENV.fetch('MYSQL_USER') { 'root' } %>
7  password: <%= ENV.fetch("MYSQL_PASSWORD", "password") %>
8  host: <%= ENV['DB_HOST'] %>
9
10development:
11  <<: *default
12  database: Cafewhere_development
13
14test:
15  <<: *default
16  database: Cafewhere_test
17
18production:
19  <<: *default
20  database: <%= ENV['DB_DATABASE'] %>
21  adapter: mysql2
22  encoding: utf8mb4
23  charset: utf8mb4
24  collation: utf8mb4_general_ci
25  host: <%= ENV['DB_HOST'] %>
26  username: <%= ENV['DB_USERNAME'] %>
27  password: <%= ENV['DB_PASSWORD'] %>

dockercompose
1version: '3'
2services:
3  # db:
4  #   image: mysql:5.7
5  #   environment:
6  #     MYSQL_ROOT_PASSWORD: password
7  #     MYSQL_USER: user
8  #     MYSQL_PASSWORD: 1234
9  #     MYSQL_DATABASE: Cafewhere_db
10  #   volumes:
11  #     - mysql-data:/var/lib/mysql
12  #   ports:
13  #     - "4306:3306"
14
15  app:
16    build: .
17    command: bundle exec puma -C config/puma.rb -e production
18    volumes:
19      - .:/Cafewhere
20      - public-data:/Cafewhere/public
21      - tmp-data:/Cafewhere/tmp
22      - log-data:/Cafewhere/log
23
24  web:
25    build:
26      context: containers/nginx
27    volumes:
28      - public-data:/Cafewhere/public
29      - tmp-data:/Cafewhere/tmp
30    ports:
31      - 80:80
32
33volumes:
34  # mysql-data:
35  public-data:
36  tmp-data:
37  log-data: